Yttrium
A silvery transition metal vital to phosphors and LEDs.
Yttrium is a chemical element with symbol Y and atomic number 39. It is a silvery-metallic transition metal chemically similar to the lanthanides and has often been classified as a rare-earth element. Yttrium is almost always found in combination with lanthanide elements in rare-earth minerals and is never found in nature as a free element. Its most important present-day use is as a component of phosphors, especially those used in LEDs, and it was historically widely used in red phosphors in television set cathode ray tube displays.
- symbol
- Y
- atomic_number
- 39
- classification
- transition metal, rare-earth element
- stable_isotope
- 89Y
- discovery_mineral
- ytterbite
- namesake_village
- Ytterby, Sweden
Lore & Background
He named the mineral after the village of Ytterby, in Sweden, where it had been discovered. When one of the chemicals in ytterbite was later found to be a previously unidentified element, the element was then named yttrium after the mineral. Yttrium is a soft, silver-metallic, lustrous and highly crystalline transition metal in group 3.
Reader's Guide
Yttrium's significance lies in its unique combination of properties: it is chemically nearly identical to the heavy lanthanides, yet it is lighter and more abundant. This similarity allows it to substitute for lanthanides in many applications, particularly in phosphors for LEDs and historically in television cathode ray tubes. Its only stable isotope, 89Y, is produced primarily by the s-process in stars, and yttrium isotopes are common products of nuclear fission. Yttrium has no known biological role, but exposure to its compounds can cause lung disease in humans. The element's discovery in the late 18th century from a mineral found in Ytterby, Sweden, led to the naming of several other elements (terbium, erbium, ytterbium) from the same quarry. Today, yttrium is used in electrodes, electrolytes, electronic filters, lasers, superconductors, and various medical applications, as well as for tracing materials to enhance their properties.
Did You Know?
- Yttrium has only one stable isotope, 89Y, which is the only isotope found in the Earth's crust.
- Yttrium is almost exclusively trivalent, whereas about half the lanthanides can have valences other than three.
- Exposure to yttrium compounds can cause lung disease in humans.
Frequently Asked Questions
Who is Yttrium?
Yttrium is a silvery, metallic transition metal occupying position 39 on the periodic table. It is commonly grouped with the rare-earth elements and takes its name from the Swedish village of Ytterby, where it was first identified in the mineral ytterbite.
What are Yttrium's powers and role in the story?
Yttrium's signature ability is serving as a key ingredient in phosphor compounds, the glowing materials inside LED lights and screens. Historically it headlined red phosphors in old cathode-ray tube televisions, and today it remains essential to modern LED technology.
How does Yttrium's story end?
Yttrium exists in only one stable isotope, 89Y, so it has no radioactive decay arc to worry about. In nature, though, it never appears on its own—it is always locked in compounds alongside lanthanide partners in rare-earth ores.
Why is Yttrium important to the cast?
Without Yttrium, the phosphors that make LED displays and energy-efficient lighting work would simply not function. Its chemical similarity to the lanthanides gives it a unique bonding behavior that makes it indispensable in those glowing compounds.
Where did Yttrium come from?
Yttrium was first spotted in the mineral ytterbite, which was mined from the village of Ytterby in Sweden. That tiny Swedish locality gave the element its name, and the discovery opened the door to the broader rare-earth family.
More in Chemical Elements 1-16
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